Stealth-RO™ TDS Monitor: ⅜" Inlet x ¼" Outlet

  • Measures unpurified water PPM going into reverse osmosis (RO) system and purified water PPM coming out. Monitors the performance of your RO system. Instantly displays values and allows you to switch back and forth between dirty and clean water TDS. Indicates when it’s time to change the RO membranes. Designed with ⅜" inlet fitting and ¼" outlet fitting, to be used with the Stealth-RO™. Can also be used with other systems that have ⅜" and ¼" tubing.

    • Range: 0-9990 ppm
    • Accuracy: ±2%
    • Conversion Factor: NaCl (avg. 0.5)
    • Cable Length: 24.5" (including sensor)
    • Fittings: ¼" standard, also available with ⅜" or ½"
    • Power Source: 2 x 1.5V button cell batteries (LR44 or equivalent; included)
    • Battery Life: approx. 1000 hours of continuous use
    • Dimensions (H x W x D): 1.875" x 3" x .7813" body only
    • Weight: 0.1813 lbs total
    • Tariff: 8421990010
  • TDS Monitor for Stealth-RO™—⅜" Inlet x ¼" Outlet Downloads


Part Number: HL 19006
MSRP: $ 43.95
UPC: 812111011536

When do I change the filter?

Find a Dealer